はあ

Etymology
.

Interjection

 * 1) mhm; yes
 * 2) um; uh
 * 3) huh? hmm? what?!
 * 4) oops
 * 5) ha!
 * 1) ha!

Usage notes

 * Some uses of this interjection are considered rude, and are generally used when someone is angry. Other interjections like or  are used in milder situations.